Casing structure for furnace



G. A. DEMING CASING STRUCTURE FOR FURNACE April 24, 1962 2 Sheets-Sheet 1 Filed June 29, 1959 @or ed? 7 7 ,mL/vf Apri124, 1962 G. A. DEMING cAsING STRUCTURE FOR FURNACE 2 Sheets-Sheet 2 Filed June 29, 1959 311%,73'7 Patented Apr. 24, 1952 ddee 3,030,737 CASING STRUCTURE FUR FURNACE George A. Deming, Chicago, Ill., assigner to Chicago Fire Bricir Company, Chicago, lll., a corporation of Iliinois Filed .lune 29, 1959, Ser. No. 823,407 3 Claims. (Ci. Sti- 391) My invention relates to casing structures for furnaces, and more particularly to a metal casing or sheathing for a light refractory wall for heat enclosures.

One of the principal purposes of my invention is to provide a metal sheathing or casing Ifor furnace structures that embody a light weight refractory Wall structure, such as disclosed in my co-pending application Serial No. 674,070, filed Iuly 25, 1957, on Fire Brick Wall Structure in which the use of a heavy casing structure as means for anchoring the refractory members is avoided and a relatively light weight sheet metal casing or sheathingstructure is capable of being used instead of such a heavy metallic casing structure.

This purpose of my invention is accomplished by providing a casing or sheathing structure that is made up of light weight sheet metal panels that are supported entirely by the metallic structure that is provided for anchoring and supporting the refractory members that make up the wall, and which metallic supporting and anchoring means is in turn mounted upon a metallic framework. Since the sheet metal panels do not support any refractory members, the same can be made of very light gauge sheet metal as compared with the heavy plate-like casing members that have been previously used in structures in which these are relied on to act as a supporting means for the metallic anchoring members for the refractories that are mounted in the wall.

The casing or sheathing `structure that I have developed is particularly adaptable for use in a wall structure, such as shown and described in my co-pending application, Serial No. 674,070, filed July 25, 1957, on Fire Brick Wall Structure. When the casing structure utilizing the light gauge sheet metal panels is applied to a Wall structure that is supported and retained in the manner described in my aforementioned coi-pending application, the sheet metal panels are mounted on shelf-like members that support the refractory retaining members that are provided in said wall structure and are held in position thereby. However, in order to mount the metallic structure, including the sheet metal panels, outwardly of the heat insulating material provided in such a wall, the retaining bricks or refractories are made of greater length from the inner heat exposed end to the outer anchoring end thereof than in the structure illustrated in said copending application.

Another important purpose of my invention is to provide :a wall structure in which all of the metallic structure is exposed to the outer atmosphere and lies outwardly from the heat insulating facing that is provided on the wall to thus provide for cooling of the metallic parts as Well as preventing undue heating thereof, as the only portions of the wall that will transfer heat to the metallic structure fare the retainer tiles or bricks that have the portions thereof that are engaged with the metallic retainer members extending outwardly beyond the heat insulating material.

`It is a further purpose of my invention to so mount the sheet metal panel members that form the casing or sheathing structure, that said panel members lalong with the metallic retainer members, in the formof channel bars, completely enclose the wall with a metallic facing, or backing. This is accomplished by providing an overlap along the vertical side edges ofthe panels between said panels and said metallic retainer bars and to provide an overlap at the bottom and top of each of the panel-s between the adjacent panel members. By providing a cast iilling of heat insulating material, the Wall is made substantially gas tight.

It is a further purpose of my invention to provide a casing or sheathing for a Wall of the above mentioned character, in which said panel members serve as means for confining the fill heat insulation during the casting operation, the said heat insulating material being conlined between the refractory retainer members of the wall, the wall forming refractories held in position by said retainer members and the sheet metal panel members.

Other objects and advantages of my invention will tappear as the description of the drawings proceeds. I desire -to have it understood, however, that I do not intend to limit myself to the particular details shown or described, except as defined in the claims.

In the drawings:

FIG. l is a fragmentary perspective view of a portion of 4a Wall made in accordance with my invention.

FIG. 2 is a perspective view of one of the sheet metal panel members.

FIG. 3 is a fragmentary horizontal section through the wall.

FIG. 4 is a fragmentary horizontal section of a modification.

FIG. 5 is -a fragmentary vertical section through the wall shown in FIG. 1, and

FIG. 6 is a fragmentary sectional view taken on the line 6 6 of FIG. 4.

Referring to FIGS. 1, 2, 3 and 5, a supporting framework is shown, including the vertical frame member 10 and the horizontal frame members 11. While said members 10 are shown as I-beams, and the members 11 as channel members, any suitable horizontal frame member 11 can be utilized that is provided with an upper flange 12. Mounted on the framework comprising the members 10 and 11 are shelf-like members 13, which have reversely bent portions 14 thereon that form hook flanges that engage the flanges 12 of the horizontal frame members 11. Extending between the shelf-like members 13 are retainer bars 15, which are in the form of channel members that have parallel side iianges 16 that terminate in inwardly directed iianges 17.

Said lianges 16 are cut away at the ends of said retainer bars 15 to provide flat end portions 18 on said retainer bars 15, that are received in slots 19 in the shelf-like members 13, the retainer bars 15 and the supporting shelf-like members 13 are thus interlocked so that said retainer bars 15 will be held firmly in position. In order to permit the insertion of the retainer refractories to be described below, the inturned flanges 17 vare cut away to provide openings 2d at the upper ends of each of said bars 15 for insertion of the retaining refractol'ies in position.

Mounted on the shelf-like members 13 and interlocked with the retainer bars 15 are the retainer refractories 21, which have head portions 22 that are engaged with the bars 15, as will be obvious `from FIG. 3, and head portions 23, which cooperate with the relatively thin wall forming refractory blocks or tiles 24 to hold the same in position in the wall. The slots 19 in the plate-like members are of suicient width that a fiat end portion 18 on the lower end of a channel bar 15 and an upper end portion 18 of the next lower channel bar can be inserted in the same slot of a shelf-like member 13.

One of the sheet metal panel members 25 is shown in FIG. 2, and it will be noted that said panel member has a pair of transversely aligned slots 26 adjacent the upper end 2.7 thereof, but spaced slightly 4from said upper end and extending inwardly from each of the side edges 28 thereof the same distance. The opposite or lower end 29 of sa-id wall panel has corner notches or cut away portions 30 in said end thereof providing a pair of horizontal on a pair of shelves 13 that are horizontally spaced from each other on the frame member 12, `at the lower end thereof, and slipping these into position on a pair of shelflike members 13 immediately above said pair of shelflike members 13 on which the shoulders 31 are supported, by passing the slotted portions 26 over the shelf-like members 13. Said panel members 2S are pushed outwardly into such a position that the marginal portions of the panels 25 adjacent the vertical edges 28 thereof will be in position against the inturned flanges 17 of the channeled retainer bars with the edge portions 2S substantially in engagement with the web portions of the refractory retainer members 21. Preferably the insertion of the sheet metal panel members 25 in this manner begins at the bottom of the wall and proceeds upwardly so that the top marginal edge 27 of a lower panel 25 will overlap the ybottom marginal edge 29 of the next higher panel 25, in the manner shown in FIG. 5. Any of the spaces between a pair of columns of refractory retainer members 21 and back of a similar column of wall forming refractories 24 and between said Wall forming refractories and a sheathing or casing panel 25 can be filled with castable heat insulating material 33, as. an opening is provided at the top of such a space for pouring in the heat insulating material. The refractories and the sheet metal casing panels 25 thus serve as a mold for the castable heat insulating fill material 33.

flt will be noted that with the heat insulating material 33 in position, the wall panels 25 will be firmly held in position between said beat insulating material 33 and the inturned anges 17 of the retainer bars 15. It will also be noted that because of the thinness of the material of the casing panels 25, yif heat insulating blocks are inserted back of the refractory members 24 and between the retainer refractories 21 in such a manner as is shown in FIG. 3. The sheet metal panel members 33 can be readily positioned between the flanges of the metallic retainer members 15 and the heat insulating material.

It will be noted upon reference to FIG. 2 that the panel members 25 are also provided with a pair of openings 34 adjacent the vertical marginal edges 28 thereof substantially mid-way between the top and bottom edges 27 and 29 of said panel members. These openings are provided, so that should it be desired to utilize said light gauge sheet panel structure for a casing or sheathing for a thicker refractory wall in which the refractory retainer members 21 are utilized, the sheet metal panel members 25 can be secured by suitable headed fastening elements to the web portions of the channel members 15 in the position shown in FIG. 4, with the castable or block heat insulatingl material 33' partly enclosing the metallic retainer members 15. In this `form of the invention lthe panel members 25 suiciently overlap the metallic channel bars 15 to provide a complete metallic enclosure for the wall, just as in the form of the invention shown in FIGS. 1 to 3, and FIG. 5.

What I claim is:

1. A light refractory wall for heat enclosures comprisiing a supporting framework,.refractory wall tiles, refractory retaining members for said wall tiles, metallic mounting means for said retaining members comprising shelflike members and vertically extending retaining channels mounted on said framework, said shelf-like members being vertically and horizontally spaced and vertically and horizontally aligned, sheet metal sheathing panels supported on said shelf-like members, each of said panels having slots receiving a pair of horizontally spaced shelflike members and having shoulders seated on a pair of horizontally spaced shelf-like members below said rst pair, and heat insulating material between said panels -and said wall tiles, the vertical marginal portions of said panels being conned between said retaining channels and said insulating material.

2. A light refractory wall for heat enclosures comprising a supporting framework, refractory 'wall tiles, refractory retaining members for said Wall tiles, metallic mountting means for said retaining members comprising shelflike members mounted on said framework in vertically spaced relation and sheet metal sheathing panels supported on said shelf-like members, each of said panels having a pair of slots adjacent one end thereof each receiving a shelf-like member and having corner recesses at the other end thereof providing shoulders seating on the pair of shelf-like members located below the shelf- `like members received in said slots.

3. A light refractory wall for heat enclosures comprising a supporting framework, refractory wall tiles, re-

fractory retaining members for said wall tiles, metallic mounting means for said retaining members comprising shelf-like members mounted on said framework in vertically spaced relation and sheet metal sheathing panels supported on said shelf-like members, each of said panels having a pair of slots adjacent one end thereof each receiving a shelf-like member and having corner recesses at the other end thereof providing shoulders seated on the pair of shelf-like members located below the shelf-like members received in said slots, each of said shelf-like members having said shoulders of a panel seated thereon being engaged in the slots of a next lower panel to hold said lower panel in overlapping relation to said first panel.

References Cited in the file of this patent UNITED STATES PATENTS 1,868,171 Keeler July 19, 1932 2,170,233 Burnet Aug. 22, 1939 2,174,871 Davey Oct. 3, 1939 2,222,576 Schauble Nov. 19, 1940 2,235,740 Fixman Mar. 18, 1941 2,264,551 Rateau Dec. 2, 1941 2,275,933 Werner Mar. 10, 1942 2,622,433 Jones Dec. 23, 1952 2,660,050 Hosbein et al Nov. 24, 1953 2,762,217 Barr et al. Sept. 11, 1956 2,854,842 Hosbein et al. Oct. 7, 1958 2,870,624 Sampson Ian. 27, 1959 

